1. Derivation of air temperature of agricultural areas of Morocco from remotely land surface temperature based on the updated Köppen-Geiger climate classification
- Author
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Tarik Benabdelouahab, Abdelghani Boudhar, Hamza Ouatiki, Hayat Lionboui, Adil Salhi, Rachid Hadria, Fouad Gadouali, Loubna Elmansouri, and Youssef Lebrini
- Subjects
Coefficient of determination ,010504 meteorology & atmospheric sciences ,Mean squared error ,0208 environmental biotechnology ,Context (language use) ,02 engineering and technology ,Spatial distribution ,01 natural sciences ,Stability (probability) ,Cross-validation ,020801 environmental engineering ,Climate classification ,Climatology ,Environmental science ,Computers in Earth Sciences ,Statistics, Probability and Uncertainty ,General Agricultural and Biological Sciences ,Scale (map) ,0105 earth and related environmental sciences ,General Environmental Science - Abstract
Air temperature is an important meteorological variable in many fields of our life. However, the availability of air temperature measurements over large geographic areas is often limited by the weather stations spatial distribution inadequacy, their low density and difficulties of data quality and collection. In this context, this study consists to develop four simple models to estimate the three components of air temperature (Tmin, Tmax and Tmean) from remotely sensed land surface temperature (Ts) derived from NOAA-AVHRR images, and based on the international Koppen-Geiger climate classification of Morocco. The results confirmed the existence of good relationships between the three components of measured air temperatures and land surface temperature derived from NOAA-AVHRR images for the main four climate classes of Morocco. The coefficient of determination, R2, varied between 0.69 and 0.80 for Tmin versus Ts, between 0.62 and 0.74 for Tmax versus Ts, and between 0.69 and 0.79 for Tmean versus Ts. The root mean square error varied between 3.1 °C and 3.3 °C for Tmin versus Ts, between 3.2 and 4.1 °C for Tmax versus Ts and between 2.7 and 3.4 °C for Tmean versus Ts. K-fold cross validation method was performed to assess the accuracy and the stability of proposed models. The limited number of proposed models is a great advantage to carry further studies requiring air temperature’s components at larger scale.
- Published
- 2019
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